content/child/blink_platform_impl.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/child/blink_platform_impl.h"
   6
   7 #include <math.h>
   8
   9 #include <vector>
  10
  11 #include "base/allocator/allocator_extension.h"
  12 #include "base/bind.h"
  13 #include "base/files/file_path.h"
  14 #include "base/location.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/memory/singleton.h"
  17 #include "base/metrics/histogram.h"
  18 #include "base/metrics/sparse_histogram.h"
  19 #include "base/process/process_metrics.h"
  20 #include "base/rand_util.h"
  21 #include "base/single_thread_task_runner.h"
  22 #include "base/strings/string_number_conversions.h"
  23 #include "base/strings/string_util.h"
  24 #include "base/strings/utf_string_conversions.h"
  25 #include "base/synchronization/lock.h"
  26 #include "base/synchronization/waitable_event.h"
  27 #include "base/sys_info.h"
  28 #include "base/thread_task_runner_handle.h"
  29 #include "base/threading/platform_thread.h"
  30 #include "base/time/time.h"
  31 #include "base/trace_event/memory_allocator_dump_guid.h"
  32 #include "base/trace_event/memory_dump_manager.h"
  33 #include "base/trace_event/trace_event.h"
  34 #include "blink/public/resources/grit/blink_image_resources.h"
  35 #include "blink/public/resources/grit/blink_resources.h"
  36 #include "components/mime_util/mime_util.h"
  37 #include "components/scheduler/child/webthread_impl_for_worker_scheduler.h"
  38 #include "content/app/resources/grit/content_resources.h"
  39 #include "content/app/strings/grit/content_strings.h"
  40 #include "content/child/background_sync/background_sync_provider.h"
  41 #include "content/child/background_sync/background_sync_provider_thread_proxy.h"
  42 #include "content/child/child_thread_impl.h"
  43 #include "content/child/content_child_helpers.h"
  44 #include "content/child/geofencing/web_geofencing_provider_impl.h"
  45 #include "content/child/navigator_connect/service_port_provider.h"
  46 #include "content/child/notifications/notification_dispatcher.h"
  47 #include "content/child/notifications/notification_manager.h"
  48 #include "content/child/permissions/permission_dispatcher.h"
  49 #include "content/child/permissions/permission_dispatcher_thread_proxy.h"
  50 #include "content/child/push_messaging/push_dispatcher.h"
  51 #include "content/child/push_messaging/push_provider.h"
  52 #include "content/child/thread_safe_sender.h"
  53 #include "content/child/web_discardable_memory_impl.h"
  54 #include "content/child/web_memory_dump_provider_adapter.h"
  55 #include "content/child/web_process_memory_dump_impl.h"
  56 #include "content/child/web_url_loader_impl.h"
  57 #include "content/child/web_url_request_util.h"
  58 #include "content/child/websocket_bridge.h"
  59 #include "content/child/worker_task_runner.h"
  60 #include "content/public/common/content_client.h"
  61 #include "net/base/data_url.h"
  62 #include "net/base/ip_address_number.h"
  63 #include "net/base/net_errors.h"
  64 #include "net/base/port_util.h"
  65 #include "third_party/WebKit/public/platform/WebConvertableToTraceFormat.h"
  66 #include "third_party/WebKit/public/platform/WebData.h"
  67 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
  68 #include "third_party/WebKit/public/platform/WebMemoryDumpProvider.h"
  69 #include "third_party/WebKit/public/platform/WebString.h"
  70 #include "third_party/WebKit/public/platform/WebURL.h"
  71 #include "third_party/WebKit/public/platform/WebWaitableEvent.h"
  72 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
  73 #include "ui/base/layout.h"
  74 #include "ui/events/gestures/blink/web_gesture_curve_impl.h"
  75 #include "ui/events/keycodes/dom/keycode_converter.h"
  76
  77 using blink::WebData;
  78 using blink::WebFallbackThemeEngine;
  79 using blink::WebLocalizedString;
  80 using blink::WebString;
  81 using blink::WebThemeEngine;
  82 using blink::WebURL;
  83 using blink::WebURLError;
  84 using blink::WebURLLoader;
  85
  86 namespace content {
  87
  88 namespace {
  89
  90 class WebWaitableEventImpl : public blink::WebWaitableEvent {
  91  public:
  92   WebWaitableEventImpl(ResetPolicy policy, InitialState state) {
  93     bool manual_reset = policy == ResetPolicy::Manual;
  94     bool initially_signaled = state == InitialState::Signaled;
  95     impl_.reset(new base::WaitableEvent(manual_reset, initially_signaled));
  96   }
  97   virtual ~WebWaitableEventImpl() {}
  98
  99   virtual void reset() { impl_->Reset(); }
 100   virtual void wait() { impl_->Wait(); }
 101   virtual void signal() { impl_->Signal(); }
 102
 103   base::WaitableEvent* impl() {
 104     return impl_.get();
 105   }
 106
 107  private:
 108   scoped_ptr<base::WaitableEvent> impl_;
 109   DISALLOW_COPY_AND_ASSIGN(WebWaitableEventImpl);
 110 };
 111
 112 // A simple class to cache the memory usage for a given amount of time.
 113 class MemoryUsageCache {
 114  public:
 115   // Retrieves the Singleton.
 116   static MemoryUsageCache* GetInstance() {
 117     return base::Singleton<MemoryUsageCache>::get();
 118   }
 119
 120   MemoryUsageCache() : memory_value_(0) { Init(); }
 121   ~MemoryUsageCache() {}
 122
 123   void Init() {
 124     const unsigned int kCacheSeconds = 1;
 125     cache_valid_time_ = base::TimeDelta::FromSeconds(kCacheSeconds);
 126   }
 127
 128   // Returns true if the cached value is fresh.
 129   // Returns false if the cached value is stale, or if |cached_value| is NULL.
 130   bool IsCachedValueValid(size_t* cached_value) {
 131     base::AutoLock scoped_lock(lock_);
 132     if (!cached_value)
 133       return false;
 134     if (base::Time::Now() - last_updated_time_ > cache_valid_time_)
 135       return false;
 136     *cached_value = memory_value_;
 137     return true;
 138   };
 139
 140   // Setter for |memory_value_|, refreshes |last_updated_time_|.
 141   void SetMemoryValue(const size_t value) {
 142     base::AutoLock scoped_lock(lock_);
 143     memory_value_ = value;
 144     last_updated_time_ = base::Time::Now();
 145   }
 146
 147  private:
 148   // The cached memory value.
 149   size_t memory_value_;
 150
 151   // How long the cached value should remain valid.
 152   base::TimeDelta cache_valid_time_;
 153
 154   // The last time the cached value was updated.
 155   base::Time last_updated_time_;
 156
 157   base::Lock lock_;
 158 };
 159
 160 class ConvertableToTraceFormatWrapper
 161     : public base::trace_event::ConvertableToTraceFormat {
 162  public:
 163   // We move a reference pointer from |convertable| to |convertable_|,
 164   // rather than copying, for thread safety. https://crbug.com/478149
 165   explicit ConvertableToTraceFormatWrapper(
 166       blink::WebConvertableToTraceFormat& convertable) {
 167     convertable_.moveFrom(convertable);
 168   }
 169   void AppendAsTraceFormat(std::string* out) const override {
 170     *out += convertable_.asTraceFormat().utf8();
 171   }
 172
 173  private:
 174   ~ConvertableToTraceFormatWrapper() override {}
 175
 176   blink::WebConvertableToTraceFormat convertable_;
 177 };
 178
 179 }  // namespace
 180
 181 static int ToMessageID(WebLocalizedString::Name name) {
 182   switch (name) {
 183     case WebLocalizedString::AXAMPMFieldText:
 184       return IDS_AX_AM_PM_FIELD_TEXT;
 185     case WebLocalizedString::AXButtonActionVerb:
 186       return IDS_AX_BUTTON_ACTION_VERB;
 187     case WebLocalizedString::AXCalendarShowMonthSelector:
 188       return IDS_AX_CALENDAR_SHOW_MONTH_SELECTOR;
 189     case WebLocalizedString::AXCalendarShowNextMonth:
 190       return IDS_AX_CALENDAR_SHOW_NEXT_MONTH;
 191     case WebLocalizedString::AXCalendarShowPreviousMonth:
 192       return IDS_AX_CALENDAR_SHOW_PREVIOUS_MONTH;
 193     case WebLocalizedString::AXCalendarWeekDescription:
 194       return IDS_AX_CALENDAR_WEEK_DESCRIPTION;
 195     case WebLocalizedString::AXCheckedCheckBoxActionVerb:
 196       return IDS_AX_CHECKED_CHECK_BOX_ACTION_VERB;
 197     case WebLocalizedString::AXDateTimeFieldEmptyValueText:
 198       return IDS_AX_DATE_TIME_FIELD_EMPTY_VALUE_TEXT;
 199     case WebLocalizedString::AXDayOfMonthFieldText:
 200       return IDS_AX_DAY_OF_MONTH_FIELD_TEXT;
 201     case WebLocalizedString::AXHeadingText:
 202       return IDS_AX_ROLE_HEADING;
 203     case WebLocalizedString::AXHourFieldText:
 204       return IDS_AX_HOUR_FIELD_TEXT;
 205     case WebLocalizedString::AXImageMapText:
 206       return IDS_AX_ROLE_IMAGE_MAP;
 207     case WebLocalizedString::AXLinkActionVerb:
 208       return IDS_AX_LINK_ACTION_VERB;
 209     case WebLocalizedString::AXLinkText:
 210       return IDS_AX_ROLE_LINK;
 211     case WebLocalizedString::AXListMarkerText:
 212       return IDS_AX_ROLE_LIST_MARKER;
 213     case WebLocalizedString::AXMediaDefault:
 214       return IDS_AX_MEDIA_DEFAULT;
 215     case WebLocalizedString::AXMediaAudioElement:
 216       return IDS_AX_MEDIA_AUDIO_ELEMENT;
 217     case WebLocalizedString::AXMediaVideoElement:
 218       return IDS_AX_MEDIA_VIDEO_ELEMENT;
 219     case WebLocalizedString::AXMediaMuteButton:
 220       return IDS_AX_MEDIA_MUTE_BUTTON;
 221     case WebLocalizedString::AXMediaUnMuteButton:
 222       return IDS_AX_MEDIA_UNMUTE_BUTTON;
 223     case WebLocalizedString::AXMediaPlayButton:
 224       return IDS_AX_MEDIA_PLAY_BUTTON;
 225     case WebLocalizedString::AXMediaPauseButton:
 226       return IDS_AX_MEDIA_PAUSE_BUTTON;
 227     case WebLocalizedString::AXMediaSlider:
 228       return IDS_AX_MEDIA_SLIDER;
 229     case WebLocalizedString::AXMediaSliderThumb:
 230       return IDS_AX_MEDIA_SLIDER_THUMB;
 231     case WebLocalizedString::AXMediaCurrentTimeDisplay:
 232       return IDS_AX_MEDIA_CURRENT_TIME_DISPLAY;
 233     case WebLocalizedString::AXMediaTimeRemainingDisplay:
 234       return IDS_AX_MEDIA_TIME_REMAINING_DISPLAY;
 235     case WebLocalizedString::AXMediaStatusDisplay:
 236       return IDS_AX_MEDIA_STATUS_DISPLAY;
 237     case WebLocalizedString::AXMediaEnterFullscreenButton:
 238       return IDS_AX_MEDIA_ENTER_FULL_SCREEN_BUTTON;
 239     case WebLocalizedString::AXMediaExitFullscreenButton:
 240       return IDS_AX_MEDIA_EXIT_FULL_SCREEN_BUTTON;
 241     case WebLocalizedString::AXMediaShowClosedCaptionsButton:
 242       return IDS_AX_MEDIA_SHOW_CLOSED_CAPTIONS_BUTTON;
 243     case WebLocalizedString::AXMediaHideClosedCaptionsButton:
 244       return IDS_AX_MEDIA_HIDE_CLOSED_CAPTIONS_BUTTON;
 245     case WebLocalizedString::AxMediaCastOffButton:
 246       return IDS_AX_MEDIA_CAST_OFF_BUTTON;
 247     case WebLocalizedString::AxMediaCastOnButton:
 248       return IDS_AX_MEDIA_CAST_ON_BUTTON;
 249     case WebLocalizedString::AXMediaAudioElementHelp:
 250       return IDS_AX_MEDIA_AUDIO_ELEMENT_HELP;
 251     case WebLocalizedString::AXMediaVideoElementHelp:
 252       return IDS_AX_MEDIA_VIDEO_ELEMENT_HELP;
 253     case WebLocalizedString::AXMediaMuteButtonHelp:
 254       return IDS_AX_MEDIA_MUTE_BUTTON_HELP;
 255     case WebLocalizedString::AXMediaUnMuteButtonHelp:
 256       return IDS_AX_MEDIA_UNMUTE_BUTTON_HELP;
 257     case WebLocalizedString::AXMediaPlayButtonHelp:
 258       return IDS_AX_MEDIA_PLAY_BUTTON_HELP;
 259     case WebLocalizedString::AXMediaPauseButtonHelp:
 260       return IDS_AX_MEDIA_PAUSE_BUTTON_HELP;
 261     case WebLocalizedString::AXMediaAudioSliderHelp:
 262       return IDS_AX_MEDIA_AUDIO_SLIDER_HELP;
 263     case WebLocalizedString::AXMediaVideoSliderHelp:
 264       return IDS_AX_MEDIA_VIDEO_SLIDER_HELP;
 265     case WebLocalizedString::AXMediaSliderThumbHelp:
 266       return IDS_AX_MEDIA_SLIDER_THUMB_HELP;
 267     case WebLocalizedString::AXMediaCurrentTimeDisplayHelp:
 268       return IDS_AX_MEDIA_CURRENT_TIME_DISPLAY_HELP;
 269     case WebLocalizedString::AXMediaTimeRemainingDisplayHelp:
 270       return IDS_AX_MEDIA_TIME_REMAINING_DISPLAY_HELP;
 271     case WebLocalizedString::AXMediaStatusDisplayHelp:
 272       return IDS_AX_MEDIA_STATUS_DISPLAY_HELP;
 273     case WebLocalizedString::AXMediaEnterFullscreenButtonHelp:
 274       return IDS_AX_MEDIA_ENTER_FULL_SCREEN_BUTTON_HELP;
 275     case WebLocalizedString::AXMediaExitFullscreenButtonHelp:
 276       return IDS_AX_MEDIA_EXIT_FULL_SCREEN_BUTTON_HELP;
 277     case WebLocalizedString::AXMediaShowClosedCaptionsButtonHelp:
 278       return IDS_AX_MEDIA_SHOW_CLOSED_CAPTIONS_BUTTON_HELP;
 279     case WebLocalizedString::AXMediaHideClosedCaptionsButtonHelp:
 280       return IDS_AX_MEDIA_HIDE_CLOSED_CAPTIONS_BUTTON_HELP;
 281     case WebLocalizedString::AxMediaCastOffButtonHelp:
 282       return IDS_AX_MEDIA_CAST_OFF_BUTTON_HELP;
 283     case WebLocalizedString::AxMediaCastOnButtonHelp:
 284       return IDS_AX_MEDIA_CAST_ON_BUTTON_HELP;
 285     case WebLocalizedString::AXMillisecondFieldText:
 286       return IDS_AX_MILLISECOND_FIELD_TEXT;
 287     case WebLocalizedString::AXMinuteFieldText:
 288       return IDS_AX_MINUTE_FIELD_TEXT;
 289     case WebLocalizedString::AXMonthFieldText:
 290       return IDS_AX_MONTH_FIELD_TEXT;
 291     case WebLocalizedString::AXRadioButtonActionVerb:
 292       return IDS_AX_RADIO_BUTTON_ACTION_VERB;
 293     case WebLocalizedString::AXSecondFieldText:
 294       return IDS_AX_SECOND_FIELD_TEXT;
 295     case WebLocalizedString::AXTextFieldActionVerb:
 296       return IDS_AX_TEXT_FIELD_ACTION_VERB;
 297     case WebLocalizedString::AXUncheckedCheckBoxActionVerb:
 298       return IDS_AX_UNCHECKED_CHECK_BOX_ACTION_VERB;
 299     case WebLocalizedString::AXWebAreaText:
 300       return IDS_AX_ROLE_WEB_AREA;
 301     case WebLocalizedString::AXWeekOfYearFieldText:
 302       return IDS_AX_WEEK_OF_YEAR_FIELD_TEXT;
 303     case WebLocalizedString::AXYearFieldText:
 304       return IDS_AX_YEAR_FIELD_TEXT;
 305     case WebLocalizedString::CalendarClear:
 306       return IDS_FORM_CALENDAR_CLEAR;
 307     case WebLocalizedString::CalendarToday:
 308       return IDS_FORM_CALENDAR_TODAY;
 309     case WebLocalizedString::DateFormatDayInMonthLabel:
 310       return IDS_FORM_DATE_FORMAT_DAY_IN_MONTH;
 311     case WebLocalizedString::DateFormatMonthLabel:
 312       return IDS_FORM_DATE_FORMAT_MONTH;
 313     case WebLocalizedString::DateFormatYearLabel:
 314       return IDS_FORM_DATE_FORMAT_YEAR;
 315     case WebLocalizedString::DetailsLabel:
 316       return IDS_DETAILS_WITHOUT_SUMMARY_LABEL;
 317     case WebLocalizedString::FileButtonChooseFileLabel:
 318       return IDS_FORM_FILE_BUTTON_LABEL;
 319     case WebLocalizedString::FileButtonChooseMultipleFilesLabel:
 320       return IDS_FORM_MULTIPLE_FILES_BUTTON_LABEL;
 321     case WebLocalizedString::FileButtonNoFileSelectedLabel:
 322       return IDS_FORM_FILE_NO_FILE_LABEL;
 323     case WebLocalizedString::InputElementAltText:
 324       return IDS_FORM_INPUT_ALT;
 325     case WebLocalizedString::KeygenMenuHighGradeKeySize:
 326       return IDS_KEYGEN_HIGH_GRADE_KEY;
 327     case WebLocalizedString::KeygenMenuMediumGradeKeySize:
 328       return IDS_KEYGEN_MED_GRADE_KEY;
 329     case WebLocalizedString::MissingPluginText:
 330       return IDS_PLUGIN_INITIALIZATION_ERROR;
 331     case WebLocalizedString::MultipleFileUploadText:
 332       return IDS_FORM_FILE_MULTIPLE_UPLOAD;
 333     case WebLocalizedString::OtherColorLabel:
 334       return IDS_FORM_OTHER_COLOR_LABEL;
 335     case WebLocalizedString::OtherDateLabel:
 336         return IDS_FORM_OTHER_DATE_LABEL;
 337     case WebLocalizedString::OtherMonthLabel:
 338       return IDS_FORM_OTHER_MONTH_LABEL;
 339     case WebLocalizedString::OtherTimeLabel:
 340       return IDS_FORM_OTHER_TIME_LABEL;
 341     case WebLocalizedString::OtherWeekLabel:
 342       return IDS_FORM_OTHER_WEEK_LABEL;
 343     case WebLocalizedString::PlaceholderForDayOfMonthField:
 344       return IDS_FORM_PLACEHOLDER_FOR_DAY_OF_MONTH_FIELD;
 345     case WebLocalizedString::PlaceholderForMonthField:
 346       return IDS_FORM_PLACEHOLDER_FOR_MONTH_FIELD;
 347     case WebLocalizedString::PlaceholderForYearField:
 348       return IDS_FORM_PLACEHOLDER_FOR_YEAR_FIELD;
 349     case WebLocalizedString::ResetButtonDefaultLabel:
 350       return IDS_FORM_RESET_LABEL;
 351     case WebLocalizedString::SearchableIndexIntroduction:
 352       return IDS_SEARCHABLE_INDEX_INTRO;
 353     case WebLocalizedString::SearchMenuClearRecentSearchesText:
 354       return IDS_RECENT_SEARCHES_CLEAR;
 355     case WebLocalizedString::SearchMenuNoRecentSearchesText:
 356       return IDS_RECENT_SEARCHES_NONE;
 357     case WebLocalizedString::SearchMenuRecentSearchesText:
 358       return IDS_RECENT_SEARCHES;
 359     case WebLocalizedString::SelectMenuListText:
 360       return IDS_FORM_SELECT_MENU_LIST_TEXT;
 361     case WebLocalizedString::SubmitButtonDefaultLabel:
 362       return IDS_FORM_SUBMIT_LABEL;
 363     case WebLocalizedString::ThisMonthButtonLabel:
 364       return IDS_FORM_THIS_MONTH_LABEL;
 365     case WebLocalizedString::ThisWeekButtonLabel:
 366       return IDS_FORM_THIS_WEEK_LABEL;
 367     case WebLocalizedString::ValidationBadInputForDateTime:
 368       return IDS_FORM_VALIDATION_BAD_INPUT_DATETIME;
 369     case WebLocalizedString::ValidationBadInputForNumber:
 370       return IDS_FORM_VALIDATION_BAD_INPUT_NUMBER;
 371     case WebLocalizedString::ValidationPatternMismatch:
 372       return IDS_FORM_VALIDATION_PATTERN_MISMATCH;
 373     case WebLocalizedString::ValidationRangeOverflow:
 374       return IDS_FORM_VALIDATION_RANGE_OVERFLOW;
 375     case WebLocalizedString::ValidationRangeOverflowDateTime:
 376       return IDS_FORM_VALIDATION_RANGE_OVERFLOW_DATETIME;
 377     case WebLocalizedString::ValidationRangeUnderflow:
 378       return IDS_FORM_VALIDATION_RANGE_UNDERFLOW;
 379     case WebLocalizedString::ValidationRangeUnderflowDateTime:
 380       return IDS_FORM_VALIDATION_RANGE_UNDERFLOW_DATETIME;
 381     case WebLocalizedString::ValidationStepMismatch:
 382       return IDS_FORM_VALIDATION_STEP_MISMATCH;
 383     case WebLocalizedString::ValidationStepMismatchCloseToLimit:
 384       return IDS_FORM_VALIDATION_STEP_MISMATCH_CLOSE_TO_LIMIT;
 385     case WebLocalizedString::ValidationTooLong:
 386       return IDS_FORM_VALIDATION_TOO_LONG;
 387     case WebLocalizedString::ValidationTooShort:
 388       return IDS_FORM_VALIDATION_TOO_SHORT;
 389     case WebLocalizedString::ValidationTypeMismatch:
 390       return IDS_FORM_VALIDATION_TYPE_MISMATCH;
 391     case WebLocalizedString::ValidationTypeMismatchForEmail:
 392       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL;
 393     case WebLocalizedString::ValidationTypeMismatchForEmailEmpty:
 394       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY;
 395     case WebLocalizedString::ValidationTypeMismatchForEmailEmptyDomain:
 396       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY_DOMAIN;
 397     case WebLocalizedString::ValidationTypeMismatchForEmailEmptyLocal:
 398       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_EMPTY_LOCAL;
 399     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidDomain:
 400       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_DOMAIN;
 401     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidDots:
 402       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_DOTS;
 403     case WebLocalizedString::ValidationTypeMismatchForEmailInvalidLocal:
 404       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_INVALID_LOCAL;
 405     case WebLocalizedString::ValidationTypeMismatchForEmailNoAtSign:
 406       return IDS_FORM_VALIDATION_TYPE_MISMATCH_EMAIL_NO_AT_SIGN;
 407     case WebLocalizedString::ValidationTypeMismatchForMultipleEmail:
 408       return IDS_FORM_VALIDATION_TYPE_MISMATCH_MULTIPLE_EMAIL;
 409     case WebLocalizedString::ValidationTypeMismatchForURL:
 410       return IDS_FORM_VALIDATION_TYPE_MISMATCH_URL;
 411     case WebLocalizedString::ValidationValueMissing:
 412       return IDS_FORM_VALIDATION_VALUE_MISSING;
 413     case WebLocalizedString::ValidationValueMissingForCheckbox:
 414       return IDS_FORM_VALIDATION_VALUE_MISSING_CHECKBOX;
 415     case WebLocalizedString::ValidationValueMissingForFile:
 416       return IDS_FORM_VALIDATION_VALUE_MISSING_FILE;
 417     case WebLocalizedString::ValidationValueMissingForMultipleFile:
 418       return IDS_FORM_VALIDATION_VALUE_MISSING_MULTIPLE_FILE;
 419     case WebLocalizedString::ValidationValueMissingForRadio:
 420       return IDS_FORM_VALIDATION_VALUE_MISSING_RADIO;
 421     case WebLocalizedString::ValidationValueMissingForSelect:
 422       return IDS_FORM_VALIDATION_VALUE_MISSING_SELECT;
 423     case WebLocalizedString::WeekFormatTemplate:
 424       return IDS_FORM_INPUT_WEEK_TEMPLATE;
 425     case WebLocalizedString::WeekNumberLabel:
 426       return IDS_FORM_WEEK_NUMBER_LABEL;
 427     // This "default:" line exists to avoid compile warnings about enum
 428     // coverage when we add a new symbol to WebLocalizedString.h in WebKit.
 429     // After a planned WebKit patch is landed, we need to add a case statement
 430     // for the added symbol here.
 431     default:
 432       break;
 433   }
 434   return -1;
 435 }
 436
 437 // TODO(skyostil): Ensure that we always have an active task runner when
 438 // constructing the platform.
 439 BlinkPlatformImpl::BlinkPlatformImpl()
 440     : BlinkPlatformImpl(base::ThreadTaskRunnerHandle::IsSet()
 441                             ? base::ThreadTaskRunnerHandle::Get()
 442                             : nullptr) {
 443 }
 444
 445 BlinkPlatformImpl::BlinkPlatformImpl(
 446     scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner)
 447     : main_thread_task_runner_(main_thread_task_runner) {
 448   InternalInit();
 449 }
 450
 451 void BlinkPlatformImpl::InternalInit() {
 452   // ChildThread may not exist in some tests.
 453   if (ChildThreadImpl::current()) {
 454     geofencing_provider_.reset(new WebGeofencingProviderImpl(
 455         ChildThreadImpl::current()->thread_safe_sender()));
 456     thread_safe_sender_ = ChildThreadImpl::current()->thread_safe_sender();
 457     notification_dispatcher_ =
 458         ChildThreadImpl::current()->notification_dispatcher();
 459     push_dispatcher_ = ChildThreadImpl::current()->push_dispatcher();
 460     permission_client_.reset(new PermissionDispatcher(
 461         ChildThreadImpl::current()->service_registry()));
 462     sync_provider_.reset(new BackgroundSyncProvider(
 463         ChildThreadImpl::current()->service_registry()));
 464   }
 465 }
 466
 467 void BlinkPlatformImpl::UpdateWebThreadTLS(blink::WebThread* thread) {
 468   DCHECK(!current_thread_slot_.Get());
 469   current_thread_slot_.Set(thread);
 470 }
 471
 472 BlinkPlatformImpl::~BlinkPlatformImpl() {
 473 }
 474
 475 WebURLLoader* BlinkPlatformImpl::createURLLoader() {
 476   ChildThreadImpl* child_thread = ChildThreadImpl::current();
 477   // There may be no child thread in RenderViewTests.  These tests can still use
 478   // data URLs to bypass the ResourceDispatcher.
 479   return new WebURLLoaderImpl(
 480       child_thread ? child_thread->resource_dispatcher() : NULL,
 481       MainTaskRunnerForCurrentThread());
 482 }
 483
 484 blink::WebSocketHandle* BlinkPlatformImpl::createWebSocketHandle() {
 485   return new WebSocketBridge;
 486 }
 487
 488 WebString BlinkPlatformImpl::userAgent() {
 489   return WebString::fromUTF8(GetContentClient()->GetUserAgent());
 490 }
 491
 492 WebData BlinkPlatformImpl::parseDataURL(const WebURL& url,
 493                                         WebString& mimetype_out,
 494                                         WebString& charset_out) {
 495   std::string mime_type, char_set, data;
 496   if (net::DataURL::Parse(url, &mime_type, &char_set, &data) &&
 497       mime_util::IsSupportedMimeType(mime_type)) {
 498     mimetype_out = WebString::fromUTF8(mime_type);
 499     charset_out = WebString::fromUTF8(char_set);
 500     return data;
 501   }
 502   return WebData();
 503 }
 504
 505 WebURLError BlinkPlatformImpl::cancelledError(
 506     const WebURL& unreachableURL) const {
 507   return CreateWebURLError(unreachableURL, false, net::ERR_ABORTED);
 508 }
 509
 510 bool BlinkPlatformImpl::isReservedIPAddress(
 511     const blink::WebString& host) const {
 512   net::IPAddressNumber address;
 513   if (!net::ParseURLHostnameToNumber(host.utf8(), &address))
 514     return false;
 515   return net::IsIPAddressReserved(address);
 516 }
 517
 518 bool BlinkPlatformImpl::portAllowed(const blink::WebURL& url) const {
 519   GURL gurl = GURL(url);
 520   // Return true for URLs without a port specified.  This is needed to let
 521   // through non-network schemes that don't go over the network.
 522   if (!gurl.has_port())
 523     return true;
 524   return net::IsPortAllowedForScheme(gurl.EffectiveIntPort(), gurl.scheme());
 525 }
 526
 527 blink::WebThread* BlinkPlatformImpl::createThread(const char* name) {
 528   scheduler::WebThreadImplForWorkerScheduler* thread =
 529       new scheduler::WebThreadImplForWorkerScheduler(name);
 530   thread->TaskRunner()->PostTask(
 531       FROM_HERE, base::Bind(&BlinkPlatformImpl::UpdateWebThreadTLS,
 532                             base::Unretained(this), thread));
 533   return thread;
 534 }
 535
 536 blink::WebThread* BlinkPlatformImpl::currentThread() {
 537   return static_cast<blink::WebThread*>(current_thread_slot_.Get());
 538 }
 539
 540 void BlinkPlatformImpl::yieldCurrentThread() {
 541   base::PlatformThread::YieldCurrentThread();
 542 }
 543
 544 blink::WebWaitableEvent* BlinkPlatformImpl::createWaitableEvent(
 545     blink::WebWaitableEvent::ResetPolicy policy,
 546     blink::WebWaitableEvent::InitialState state) {
 547   return new WebWaitableEventImpl(policy, state);
 548 }
 549
 550 blink::WebWaitableEvent* BlinkPlatformImpl::waitMultipleEvents(
 551     const blink::WebVector<blink::WebWaitableEvent*>& web_events) {
 552   std::vector<base::WaitableEvent*> events;
 553   for (size_t i = 0; i < web_events.size(); ++i)
 554     events.push_back(static_cast<WebWaitableEventImpl*>(web_events[i])->impl());
 555   size_t idx = base::WaitableEvent::WaitMany(
 556       vector_as_array(&events), events.size());
 557   DCHECK_LT(idx, web_events.size());
 558   return web_events[idx];
 559 }
 560
 561 void BlinkPlatformImpl::decrementStatsCounter(const char* name) {
 562 }
 563
 564 void BlinkPlatformImpl::incrementStatsCounter(const char* name) {
 565 }
 566
 567 void BlinkPlatformImpl::histogramCustomCounts(
 568     const char* name, int sample, int min, int max, int bucket_count) {
 569   // Copied from histogram macro, but without the static variable caching
 570   // the histogram because name is dynamic.
 571   base::HistogramBase* counter =
 572       base::Histogram::FactoryGet(name, min, max, bucket_count,
 573           base::HistogramBase::kUmaTargetedHistogramFlag);
 574   DCHECK_EQ(name, counter->histogram_name());
 575   counter->Add(sample);
 576 }
 577
 578 void BlinkPlatformImpl::histogramEnumeration(
 579     const char* name, int sample, int boundary_value) {
 580   // Copied from histogram macro, but without the static variable caching
 581   // the histogram because name is dynamic.
 582   base::HistogramBase* counter =
 583       base::LinearHistogram::FactoryGet(name, 1, boundary_value,
 584           boundary_value + 1, base::HistogramBase::kUmaTargetedHistogramFlag);
 585   DCHECK_EQ(name, counter->histogram_name());
 586   counter->Add(sample);
 587 }
 588
 589 void BlinkPlatformImpl::histogramSparse(const char* name, int sample) {
 590   // For sparse histograms, we can use the macro, as it does not incorporate a
 591   // static.
 592   UMA_HISTOGRAM_SPARSE_SLOWLY(name, sample);
 593 }
 594
 595 const unsigned char* BlinkPlatformImpl::getTraceCategoryEnabledFlag(
 596     const char* category_group) {
 597   return TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(category_group);
 598 }
 599
 600 blink::Platform::TraceEventAPIAtomicWord*
 601 BlinkPlatformImpl::getTraceSamplingState(const unsigned thread_bucket) {
 602   switch (thread_bucket) {
 603     case 0:
 604       return reinterpret_cast<blink::Platform::TraceEventAPIAtomicWord*>(
 605           &TRACE_EVENT_API_THREAD_BUCKET(0));
 606     case 1:
 607       return reinterpret_cast<blink::Platform::TraceEventAPIAtomicWord*>(
 608           &TRACE_EVENT_API_THREAD_BUCKET(1));
 609     case 2:
 610       return reinterpret_cast<blink::Platform::TraceEventAPIAtomicWord*>(
 611           &TRACE_EVENT_API_THREAD_BUCKET(2));
 612     default:
 613       NOTREACHED() << "Unknown thread bucket type.";
 614   }
 615   return NULL;
 616 }
 617
 618 static_assert(
 619     sizeof(blink::Platform::TraceEventHandle) ==
 620         sizeof(base::trace_event::TraceEventHandle),
 621     "TraceEventHandle types must be same size");
 622
 623 blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
 624     char phase,
 625     const unsigned char* category_group_enabled,
 626     const char* name,
 627     unsigned long long id,
 628     unsigned long long bind_id,
 629     double timestamp,
 630     int num_args,
 631     const char** arg_names,
 632     const unsigned char* arg_types,
 633     const unsigned long long* arg_values,
 634     blink::WebConvertableToTraceFormat* convertable_values,
 635     unsigned int flags) {
 636   scoped_refptr<base::trace_event::ConvertableToTraceFormat>
 637       convertable_wrappers[2];
 638   if (convertable_values) {
 639     size_t size = std::min(static_cast<size_t>(num_args),
 640                            arraysize(convertable_wrappers));
 641     for (size_t i = 0; i < size; ++i) {
 642       if (arg_types[i] == TRACE_VALUE_TYPE_CONVERTABLE) {
 643         convertable_wrappers[i] =
 644             new ConvertableToTraceFormatWrapper(convertable_values[i]);
 645       }
 646     }
 647   }
 648   base::TraceTicks timestamp_tt =
 649       base::TraceTicks() + base::TimeDelta::FromSecondsD(timestamp);
 650   base::trace_event::TraceEventHandle handle =
 651       TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(
 652           phase, category_group_enabled, name, id, trace_event_internal::kNoId,
 653           base::PlatformThread::CurrentId(), bind_id, timestamp_tt, num_args,
 654           arg_names, arg_types, arg_values, convertable_wrappers, flags);
 655   blink::Platform::TraceEventHandle result;
 656   memcpy(&result, &handle, sizeof(result));
 657   return result;
 658 }
 659
 660 blink::Platform::TraceEventHandle BlinkPlatformImpl::addTraceEvent(
 661     char phase,
 662     const unsigned char* category_group_enabled,
 663     const char* name,
 664     unsigned long long id,
 665     double timestamp,
 666     int num_args,
 667     const char** arg_names,
 668     const unsigned char* arg_types,
 669     const unsigned long long* arg_values,
 670     blink::WebConvertableToTraceFormat* convertable_values,
 671     unsigned char flags) {
 672   scoped_refptr<base::trace_event::ConvertableToTraceFormat>
 673       convertable_wrappers[2];
 674   if (convertable_values) {
 675     size_t size = std::min(static_cast<size_t>(num_args),
 676                            arraysize(convertable_wrappers));
 677     for (size_t i = 0; i < size; ++i) {
 678       if (arg_types[i] == TRACE_VALUE_TYPE_CONVERTABLE) {
 679         convertable_wrappers[i] =
 680             new ConvertableToTraceFormatWrapper(convertable_values[i]);
 681       }
 682     }
 683   }
 684   base::TraceTicks timestamp_tt =
 685       base::TraceTicks() + base::TimeDelta::FromSecondsD(timestamp);
 686   base::trace_event::TraceEventHandle handle =
 687       TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(
 688           phase, category_group_enabled, name, id, trace_event_internal::kNoId,
 689           base::PlatformThread::CurrentId(), timestamp_tt, num_args, arg_names,
 690           arg_types, arg_values, convertable_wrappers, flags);
 691   blink::Platform::TraceEventHandle result;
 692   memcpy(&result, &handle, sizeof(result));
 693   return result;
 694 }
 695
 696 void BlinkPlatformImpl::updateTraceEventDuration(
 697     const unsigned char* category_group_enabled,
 698     const char* name,
 699     TraceEventHandle handle) {
 700   base::trace_event::TraceEventHandle traceEventHandle;
 701   memcpy(&traceEventHandle, &handle, sizeof(handle));
 702   TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(
 703       category_group_enabled, name, traceEventHandle);
 704 }
 705
 706 void BlinkPlatformImpl::registerMemoryDumpProvider(
 707     blink::WebMemoryDumpProvider* wmdp) {
 708   WebMemoryDumpProviderAdapter* wmdp_adapter =
 709       new WebMemoryDumpProviderAdapter(wmdp);
 710   bool did_insert =
 711       memory_dump_providers_.add(wmdp, make_scoped_ptr(wmdp_adapter)).second;
 712   if (!did_insert)
 713     return;
 714   wmdp_adapter->set_is_registered(true);
 715   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
 716       wmdp_adapter, base::ThreadTaskRunnerHandle::Get());
 717 }
 718
 719 void BlinkPlatformImpl::unregisterMemoryDumpProvider(
 720     blink::WebMemoryDumpProvider* wmdp) {
 721   scoped_ptr<WebMemoryDumpProviderAdapter> wmdp_adapter =
 722       memory_dump_providers_.take_and_erase(wmdp);
 723   if (!wmdp_adapter)
 724     return;
 725   base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
 726       wmdp_adapter.get());
 727   wmdp_adapter->set_is_registered(false);
 728 }
 729
 730 blink::WebProcessMemoryDump* BlinkPlatformImpl::createProcessMemoryDump() {
 731   return new WebProcessMemoryDumpImpl();
 732 }
 733
 734 blink::Platform::WebMemoryAllocatorDumpGuid
 735 BlinkPlatformImpl::createWebMemoryAllocatorDumpGuid(
 736     const blink::WebString& guidStr) {
 737   return base::trace_event::MemoryAllocatorDumpGuid(guidStr.utf8()).ToUint64();
 738 }
 739
 740 namespace {
 741
 742 WebData loadAudioSpatializationResource(const char* name) {
 743 #ifdef IDR_AUDIO_SPATIALIZATION_COMPOSITE
 744   if (!strcmp(name, "Composite")) {
 745     base::StringPiece resource = GetContentClient()->GetDataResource(
 746         IDR_AUDIO_SPATIALIZATION_COMPOSITE, ui::SCALE_FACTOR_NONE);
 747     return WebData(resource.data(), resource.size());
 748   }
 749 #endif
 750
 751 #ifdef IDR_AUDIO_SPATIALIZATION_T000_P000
 752   const size_t kExpectedSpatializationNameLength = 31;
 753   if (strlen(name) != kExpectedSpatializationNameLength) {
 754     return WebData();
 755   }
 756
 757   // Extract the azimuth and elevation from the resource name.
 758   int azimuth = 0;
 759   int elevation = 0;
 760   int values_parsed =
 761       sscanf(name, "IRC_Composite_C_R0195_T%3d_P%3d", &azimuth, &elevation);
 762   if (values_parsed != 2) {
 763     return WebData();
 764   }
 765
 766   // The resource index values go through the elevations first, then azimuths.
 767   const int kAngleSpacing = 15;
 768
 769   // 0 <= elevation <= 90 (or 315 <= elevation <= 345)
 770   // in increments of 15 degrees.
 771   int elevation_index =
 772       elevation <= 90 ? elevation / kAngleSpacing :
 773       7 + (elevation - 315) / kAngleSpacing;
 774   bool is_elevation_index_good = 0 <= elevation_index && elevation_index < 10;
 775
 776   // 0 <= azimuth < 360 in increments of 15 degrees.
 777   int azimuth_index = azimuth / kAngleSpacing;
 778   bool is_azimuth_index_good = 0 <= azimuth_index && azimuth_index < 24;
 779
 780   const int kNumberOfElevations = 10;
 781   const int kNumberOfAudioResources = 240;
 782   int resource_index = kNumberOfElevations * azimuth_index + elevation_index;
 783   bool is_resource_index_good = 0 <= resource_index &&
 784       resource_index < kNumberOfAudioResources;
 785
 786   if (is_azimuth_index_good && is_elevation_index_good &&
 787       is_resource_index_good) {
 788     const int kFirstAudioResourceIndex = IDR_AUDIO_SPATIALIZATION_T000_P000;
 789     base::StringPiece resource = GetContentClient()->GetDataResource(
 790         kFirstAudioResourceIndex + resource_index, ui::SCALE_FACTOR_NONE);
 791     return WebData(resource.data(), resource.size());
 792   }
 793 #endif  // IDR_AUDIO_SPATIALIZATION_T000_P000
 794
 795   NOTREACHED();
 796   return WebData();
 797 }
 798
 799 struct DataResource {
 800   const char* name;
 801   int id;
 802   ui::ScaleFactor scale_factor;
 803 };
 804
 805 const DataResource kDataResources[] = {
 806     {"missingImage", IDR_BROKENIMAGE, ui::SCALE_FACTOR_100P},
 807     {"missingImage@2x", IDR_BROKENIMAGE, ui::SCALE_FACTOR_200P},
 808     {"mediaplayerPause", IDR_MEDIAPLAYER_PAUSE_BUTTON, ui::SCALE_FACTOR_100P},
 809     {"mediaplayerPauseNew",
 810      IDR_MEDIAPLAYER_PAUSE_BUTTON_NEW,
 811      ui::SCALE_FACTOR_100P},
 812     {"mediaplayerPauseHover",
 813      IDR_MEDIAPLAYER_PAUSE_BUTTON_HOVER,
 814      ui::SCALE_FACTOR_100P},
 815     {"mediaplayerPauseDown",
 816      IDR_MEDIAPLAYER_PAUSE_BUTTON_DOWN,
 817      ui::SCALE_FACTOR_100P},
 818     {"mediaplayerPlay", IDR_MEDIAPLAYER_PLAY_BUTTON, ui::SCALE_FACTOR_100P},
 819     {"mediaplayerPlayNew",
 820      IDR_MEDIAPLAYER_PLAY_BUTTON_NEW,
 821      ui::SCALE_FACTOR_100P},
 822     {"mediaplayerPlayHover",
 823      IDR_MEDIAPLAYER_PLAY_BUTTON_HOVER,
 824      ui::SCALE_FACTOR_100P},
 825     {"mediaplayerPlayDown",
 826      IDR_MEDIAPLAYER_PLAY_BUTTON_DOWN,
 827      ui::SCALE_FACTOR_100P},
 828     {"mediaplayerPlayDisabled",
 829      IDR_MEDIAPLAYER_PLAY_BUTTON_DISABLED,
 830      ui::SCALE_FACTOR_100P},
 831     {"mediaplayerSoundLevel3",
 832      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON,
 833      ui::SCALE_FACTOR_100P},
 834     {"mediaplayerSoundLevel3New",
 835      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_NEW,
 836      ui::SCALE_FACTOR_100P},
 837     {"mediaplayerSoundLevel3Hover",
 838      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_HOVER,
 839      ui::SCALE_FACTOR_100P},
 840     {"mediaplayerSoundLevel3Down",
 841      IDR_MEDIAPLAYER_SOUND_LEVEL3_BUTTON_DOWN,
 842      ui::SCALE_FACTOR_100P},
 843     {"mediaplayerSoundLevel2",
 844      IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON,
 845      ui::SCALE_FACTOR_100P},
 846     {"mediaplayerSoundLevel2Hover",
 847      IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON_HOVER,
 848      ui::SCALE_FACTOR_100P},
 849     {"mediaplayerSoundLevel2Down",
 850      IDR_MEDIAPLAYER_SOUND_LEVEL2_BUTTON_DOWN,
 851      ui::SCALE_FACTOR_100P},
 852     {"mediaplayerSoundLevel1",
 853      IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON,
 854      ui::SCALE_FACTOR_100P},
 855     {"mediaplayerSoundLevel1Hover",
 856      IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON_HOVER,
 857      ui::SCALE_FACTOR_100P},
 858     {"mediaplayerSoundLevel1Down",
 859      IDR_MEDIAPLAYER_SOUND_LEVEL1_BUTTON_DOWN,
 860      ui::SCALE_FACTOR_100P},
 861     {"mediaplayerSoundLevel0",
 862      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON,
 863      ui::SCALE_FACTOR_100P},
 864     {"mediaplayerSoundLevel0New",
 865      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_NEW,
 866      ui::SCALE_FACTOR_100P},
 867     {"mediaplayerSoundLevel0Hover",
 868      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_HOVER,
 869      ui::SCALE_FACTOR_100P},
 870     {"mediaplayerSoundLevel0Down",
 871      IDR_MEDIAPLAYER_SOUND_LEVEL0_BUTTON_DOWN,
 872      ui::SCALE_FACTOR_100P},
 873     {"mediaplayerSoundDisabled",
 874      IDR_MEDIAPLAYER_SOUND_DISABLED,
 875      ui::SCALE_FACTOR_100P},
 876     {"mediaplayerSliderThumb",
 877      IDR_MEDIAPLAYER_SLIDER_THUMB,
 878      ui::SCALE_FACTOR_100P},
 879     {"mediaplayerSliderThumbNew",
 880      IDR_MEDIAPLAYER_SLIDER_THUMB_NEW,
 881      ui::SCALE_FACTOR_100P},
 882     {"mediaplayerSliderThumbHover",
 883      IDR_MEDIAPLAYER_SLIDER_THUMB_HOVER,
 884      ui::SCALE_FACTOR_100P},
 885     {"mediaplayerSliderThumbDown",
 886      IDR_MEDIAPLAYER_SLIDER_THUMB_DOWN,
 887      ui::SCALE_FACTOR_100P},
 888     {"mediaplayerVolumeSliderThumb",
 889      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB,
 890      ui::SCALE_FACTOR_100P},
 891     {"mediaplayerVolumeSliderThumbNew",
 892      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_NEW,
 893      ui::SCALE_FACTOR_100P},
 894     {"mediaplayerVolumeSliderThumbHover",
 895      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_HOVER,
 896      ui::SCALE_FACTOR_100P},
 897     {"mediaplayerVolumeSliderThumbDown",
 898      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_DOWN,
 899      ui::SCALE_FACTOR_100P},
 900     {"mediaplayerVolumeSliderThumbDisabled",
 901      IDR_MEDIAPLAYER_VOLUME_SLIDER_THUMB_DISABLED,
 902      ui::SCALE_FACTOR_100P},
 903     {"mediaplayerClosedCaption",
 904      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON,
 905      ui::SCALE_FACTOR_100P},
 906     {"mediaplayerClosedCaptionNew",
 907      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_NEW,
 908      ui::SCALE_FACTOR_100P},
 909     {"mediaplayerClosedCaptionHover",
 910      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_HOVER,
 911      ui::SCALE_FACTOR_100P},
 912     {"mediaplayerClosedCaptionDown",
 913      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DOWN,
 914      ui::SCALE_FACTOR_100P},
 915     {"mediaplayerClosedCaptionDisabled",
 916      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DISABLED,
 917      ui::SCALE_FACTOR_100P},
 918     {"mediaplayerClosedCaptionDisabledNew",
 919      IDR_MEDIAPLAYER_CLOSEDCAPTION_BUTTON_DISABLED_NEW,
 920      ui::SCALE_FACTOR_100P},
 921     {"mediaplayerEnterFullscreen",
 922      IDR_MEDIAPLAYER_ENTER_FULLSCREEN_BUTTON,
 923      ui::SCALE_FACTOR_100P},
 924     {"mediaplayerExitFullscreen",
 925      IDR_MEDIAPLAYER_EXIT_FULLSCREEN_BUTTON,
 926      ui::SCALE_FACTOR_100P},
 927     {"mediaplayerFullscreen",
 928      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON,
 929      ui::SCALE_FACTOR_100P},
 930     {"mediaplayerFullscreenHover",
 931      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_HOVER,
 932      ui::SCALE_FACTOR_100P},
 933     {"mediaplayerFullscreenDown",
 934      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_DOWN,
 935      ui::SCALE_FACTOR_100P},
 936     {"mediaplayerCastOff",
 937      IDR_MEDIAPLAYER_CAST_BUTTON_OFF,
 938      ui::SCALE_FACTOR_100P},
 939     {"mediaplayerCastOn",
 940      IDR_MEDIAPLAYER_CAST_BUTTON_ON,
 941      ui::SCALE_FACTOR_100P},
 942     {"mediaplayerCastOffNew",
 943      IDR_MEDIAPLAYER_CAST_BUTTON_OFF_NEW,
 944      ui::SCALE_FACTOR_100P},
 945     {"mediaplayerCastOnNew",
 946      IDR_MEDIAPLAYER_CAST_BUTTON_ON_NEW,
 947      ui::SCALE_FACTOR_100P},
 948     {"mediaplayerFullscreenDisabled",
 949      IDR_MEDIAPLAYER_FULLSCREEN_BUTTON_DISABLED,
 950      ui::SCALE_FACTOR_100P},
 951     {"mediaplayerOverlayCastOff",
 952      IDR_MEDIAPLAYER_OVERLAY_CAST_BUTTON_OFF,
 953      ui::SCALE_FACTOR_100P},
 954     {"mediaplayerOverlayCastOffNew",
 955      IDR_MEDIAPLAYER_OVERLAY_CAST_BUTTON_OFF_NEW,
 956      ui::SCALE_FACTOR_100P},
 957     {"mediaplayerOverlayPlay",
 958      IDR_MEDIAPLAYER_OVERLAY_PLAY_BUTTON,
 959      ui::SCALE_FACTOR_100P},
 960     {"mediaplayerOverlayPlayNew",
 961      IDR_MEDIAPLAYER_OVERLAY_PLAY_BUTTON_NEW,
 962      ui::SCALE_FACTOR_100P},
 963     {"searchCancel", IDR_SEARCH_CANCEL, ui::SCALE_FACTOR_100P},
 964     {"searchCancelPressed", IDR_SEARCH_CANCEL_PRESSED, ui::SCALE_FACTOR_100P},
 965     {"searchMagnifier", IDR_SEARCH_MAGNIFIER, ui::SCALE_FACTOR_100P},
 966     {"searchMagnifierResults",
 967      IDR_SEARCH_MAGNIFIER_RESULTS,
 968      ui::SCALE_FACTOR_100P},
 969     {"textAreaResizeCorner", IDR_TEXTAREA_RESIZER, ui::SCALE_FACTOR_100P},
 970     {"textAreaResizeCorner@2x", IDR_TEXTAREA_RESIZER, ui::SCALE_FACTOR_200P},
 971     {"generatePassword", IDR_PASSWORD_GENERATION_ICON, ui::SCALE_FACTOR_100P},
 972     {"generatePasswordHover",
 973      IDR_PASSWORD_GENERATION_ICON_HOVER,
 974      ui::SCALE_FACTOR_100P},
 975     {"html.css", IDR_UASTYLE_HTML_CSS, ui::SCALE_FACTOR_NONE},
 976     {"quirks.css", IDR_UASTYLE_QUIRKS_CSS, ui::SCALE_FACTOR_NONE},
 977     {"view-source.css", IDR_UASTYLE_VIEW_SOURCE_CSS, ui::SCALE_FACTOR_NONE},
 978     {"themeChromium.css",
 979      IDR_UASTYLE_THEME_CHROMIUM_CSS,
 980      ui::SCALE_FACTOR_NONE},
 981 #if defined(OS_ANDROID)
 982     {"themeChromiumAndroid.css",
 983      IDR_UASTYLE_THEME_CHROMIUM_ANDROID_CSS,
 984      ui::SCALE_FACTOR_NONE},
 985     {"mediaControlsAndroid.css",
 986      IDR_UASTYLE_MEDIA_CONTROLS_ANDROID_CSS,
 987      ui::SCALE_FACTOR_NONE},
 988     {"mediaControlsAndroidNew.css",
 989      IDR_UASTYLE_MEDIA_CONTROLS_ANDROID_NEW_CSS,
 990      ui::SCALE_FACTOR_NONE},
 991 #endif
 992 #if !defined(OS_WIN)
 993     {"themeChromiumLinux.css",
 994      IDR_UASTYLE_THEME_CHROMIUM_LINUX_CSS,
 995      ui::SCALE_FACTOR_NONE},
 996 #endif
 997     {"themeChromiumSkia.css",
 998      IDR_UASTYLE_THEME_CHROMIUM_SKIA_CSS,
 999      ui::SCALE_FACTOR_NONE},
1000     {"themeInputMultipleFields.css",
1001      IDR_UASTYLE_THEME_INPUT_MULTIPLE_FIELDS_CSS,
1002      ui::SCALE_FACTOR_NONE},
1003 #if defined(OS_MACOSX)
1004     {"themeMac.css", IDR_UASTYLE_THEME_MAC_CSS, ui::SCALE_FACTOR_NONE},
1005 #endif
1006     {"themeWin.css", IDR_UASTYLE_THEME_WIN_CSS, ui::SCALE_FACTOR_NONE},
1007     {"themeWinQuirks.css",
1008      IDR_UASTYLE_THEME_WIN_QUIRKS_CSS,
1009      ui::SCALE_FACTOR_NONE},
1010     {"svg.css", IDR_UASTYLE_SVG_CSS, ui::SCALE_FACTOR_NONE},
1011     {"mathml.css", IDR_UASTYLE_MATHML_CSS, ui::SCALE_FACTOR_NONE},
1012     {"mediaControls.css",
1013      IDR_UASTYLE_MEDIA_CONTROLS_CSS,
1014      ui::SCALE_FACTOR_NONE},
1015     {"mediaControlsNew.css",
1016      IDR_UASTYLE_MEDIA_CONTROLS_NEW_CSS,
1017      ui::SCALE_FACTOR_NONE},
1018     {"fullscreen.css", IDR_UASTYLE_FULLSCREEN_CSS, ui::SCALE_FACTOR_NONE},
1019     {"xhtmlmp.css", IDR_UASTYLE_XHTMLMP_CSS, ui::SCALE_FACTOR_NONE},
1020     {"viewportAndroid.css",
1021      IDR_UASTYLE_VIEWPORT_ANDROID_CSS,
1022      ui::SCALE_FACTOR_NONE},
1023     {"InspectorOverlayPage.html",
1024      IDR_INSPECTOR_OVERLAY_PAGE_HTML,
1025      ui::SCALE_FACTOR_NONE},
1026     {"InjectedScriptSource.js",
1027      IDR_INSPECTOR_INJECTED_SCRIPT_SOURCE_JS,
1028      ui::SCALE_FACTOR_NONE},
1029     {"DebuggerScriptSource.js",
1030      IDR_INSPECTOR_DEBUGGER_SCRIPT_SOURCE_JS,
1031      ui::SCALE_FACTOR_NONE},
1032     {"DocumentExecCommand.js",
1033      IDR_PRIVATE_SCRIPT_DOCUMENTEXECCOMMAND_JS,
1034      ui::SCALE_FACTOR_NONE},
1035     {"DocumentXMLTreeViewer.css",
1036      IDR_PRIVATE_SCRIPT_DOCUMENTXMLTREEVIEWER_CSS,
1037      ui::SCALE_FACTOR_NONE},
1038     {"DocumentXMLTreeViewer.js",
1039      IDR_PRIVATE_SCRIPT_DOCUMENTXMLTREEVIEWER_JS,
1040      ui::SCALE_FACTOR_NONE},
1041     {"HTMLMarqueeElement.js",
1042      IDR_PRIVATE_SCRIPT_HTMLMARQUEEELEMENT_JS,
1043      ui::SCALE_FACTOR_NONE},
1044     {"PrivateScriptRunner.js",
1045      IDR_PRIVATE_SCRIPT_PRIVATESCRIPTRUNNER_JS,
1046      ui::SCALE_FACTOR_NONE},
1047 #ifdef IDR_PICKER_COMMON_JS
1048     {"pickerCommon.js", IDR_PICKER_COMMON_JS, ui::SCALE_FACTOR_NONE},
1049     {"pickerCommon.css", IDR_PICKER_COMMON_CSS, ui::SCALE_FACTOR_NONE},
1050     {"calendarPicker.js", IDR_CALENDAR_PICKER_JS, ui::SCALE_FACTOR_NONE},
1051     {"calendarPicker.css", IDR_CALENDAR_PICKER_CSS, ui::SCALE_FACTOR_NONE},
1052     {"listPicker.js", IDR_LIST_PICKER_JS, ui::SCALE_FACTOR_NONE},
1053     {"listPicker.css", IDR_LIST_PICKER_CSS, ui::SCALE_FACTOR_NONE},
1054     {"pickerButton.css", IDR_PICKER_BUTTON_CSS, ui::SCALE_FACTOR_NONE},
1055     {"suggestionPicker.js", IDR_SUGGESTION_PICKER_JS, ui::SCALE_FACTOR_NONE},
1056     {"suggestionPicker.css", IDR_SUGGESTION_PICKER_CSS, ui::SCALE_FACTOR_NONE},
1057     {"colorSuggestionPicker.js",
1058      IDR_COLOR_SUGGESTION_PICKER_JS,
1059      ui::SCALE_FACTOR_NONE},
1060     {"colorSuggestionPicker.css",
1061      IDR_COLOR_SUGGESTION_PICKER_CSS,
1062      ui::SCALE_FACTOR_NONE},
1063 #endif
1064 };
1065
1066 }  // namespace
1067
1068 WebData BlinkPlatformImpl::loadResource(const char* name) {
1069   // Some clients will call into this method with an empty |name| when they have
1070   // optional resources.  For example, the PopupMenuChromium code can have icons
1071   // for some Autofill items but not for others.
1072   if (!strlen(name))
1073     return WebData();
1074
1075   // Check the name prefix to see if it's an audio resource.
1076   if (base::StartsWith(name, "IRC_Composite", base::CompareCase::SENSITIVE) ||
1077       base::StartsWith(name, "Composite", base::CompareCase::SENSITIVE))
1078     return loadAudioSpatializationResource(name);
1079
1080   // TODO(flackr): We should use a better than linear search here, a trie would
1081   // be ideal.
1082   for (size_t i = 0; i < arraysize(kDataResources); ++i) {
1083     if (!strcmp(name, kDataResources[i].name)) {
1084       base::StringPiece resource = GetContentClient()->GetDataResource(
1085           kDataResources[i].id, kDataResources[i].scale_factor);
1086       return WebData(resource.data(), resource.size());
1087     }
1088   }
1089
1090   NOTREACHED() << "Unknown image resource " << name;
1091   return WebData();
1092 }
1093
1094 WebString BlinkPlatformImpl::queryLocalizedString(
1095     WebLocalizedString::Name name) {
1096   int message_id = ToMessageID(name);
1097   if (message_id < 0)
1098     return WebString();
1099   return GetContentClient()->GetLocalizedString(message_id);
1100 }
1101
1102 WebString BlinkPlatformImpl::queryLocalizedString(
1103     WebLocalizedString::Name name, int numeric_value) {
1104   return queryLocalizedString(name, base::IntToString16(numeric_value));
1105 }
1106
1107 WebString BlinkPlatformImpl::queryLocalizedString(
1108     WebLocalizedString::Name name, const WebString& value) {
1109   int message_id = ToMessageID(name);
1110   if (message_id < 0)
1111     return WebString();
1112   return base::ReplaceStringPlaceholders(
1113       GetContentClient()->GetLocalizedString(message_id), value, NULL);
1114 }
1115
1116 WebString BlinkPlatformImpl::queryLocalizedString(
1117     WebLocalizedString::Name name,
1118     const WebString& value1,
1119     const WebString& value2) {
1120   int message_id = ToMessageID(name);
1121   if (message_id < 0)
1122     return WebString();
1123   std::vector<base::string16> values;
1124   values.reserve(2);
1125   values.push_back(value1);
1126   values.push_back(value2);
1127   return base::ReplaceStringPlaceholders(
1128       GetContentClient()->GetLocalizedString(message_id), values, NULL);
1129 }
1130
1131 double BlinkPlatformImpl::currentTime() {
1132   return base::Time::Now().ToDoubleT();
1133 }
1134
1135 double BlinkPlatformImpl::monotonicallyIncreasingTime() {
1136   return base::TimeTicks::Now().ToInternalValue() /
1137       static_cast<double>(base::Time::kMicrosecondsPerSecond);
1138 }
1139
1140 double BlinkPlatformImpl::systemTraceTime() {
1141   return (base::TraceTicks::Now() - base::TraceTicks()).InSecondsF();
1142 }
1143
1144 void BlinkPlatformImpl::cryptographicallyRandomValues(
1145     unsigned char* buffer, size_t length) {
1146   base::RandBytes(buffer, length);
1147 }
1148
1149 blink::WebGestureCurve* BlinkPlatformImpl::createFlingAnimationCurve(
1150     blink::WebGestureDevice device_source,
1151     const blink::WebFloatPoint& velocity,
1152     const blink::WebSize& cumulative_scroll) {
1153   return ui::WebGestureCurveImpl::CreateFromDefaultPlatformCurve(
1154              gfx::Vector2dF(velocity.x, velocity.y),
1155              gfx::Vector2dF(cumulative_scroll.width, cumulative_scroll.height),
1156              IsMainThread()).release();
1157 }
1158
1159 void BlinkPlatformImpl::didStartWorkerRunLoop() {
1160   WorkerTaskRunner* worker_task_runner = WorkerTaskRunner::Instance();
1161   worker_task_runner->DidStartWorkerRunLoop();
1162 }
1163
1164 void BlinkPlatformImpl::didStopWorkerRunLoop() {
1165   // TODO(kalman): blink::Platform::didStopWorkerRunLoop should be called
1166   // willStopWorkerRunLoop, because at this point the run loop hasn't been
1167   // stopped. WillStopWorkerRunLoop is the correct name.
1168   WorkerTaskRunner* worker_task_runner = WorkerTaskRunner::Instance();
1169   worker_task_runner->WillStopWorkerRunLoop();
1170 }
1171
1172 blink::WebCrypto* BlinkPlatformImpl::crypto() {
1173   return &web_crypto_;
1174 }
1175
1176 blink::WebGeofencingProvider* BlinkPlatformImpl::geofencingProvider() {
1177   return geofencing_provider_.get();
1178 }
1179
1180 blink::WebNotificationManager*
1181 BlinkPlatformImpl::notificationManager() {
1182   if (!thread_safe_sender_.get() || !notification_dispatcher_.get())
1183     return nullptr;
1184
1185   return NotificationManager::ThreadSpecificInstance(
1186       thread_safe_sender_.get(),
1187       main_thread_task_runner_.get(),
1188       notification_dispatcher_.get());
1189 }
1190
1191 blink::WebPushProvider* BlinkPlatformImpl::pushProvider() {
1192   if (!thread_safe_sender_.get() || !push_dispatcher_.get())
1193     return nullptr;
1194
1195   return PushProvider::ThreadSpecificInstance(thread_safe_sender_.get(),
1196                                               push_dispatcher_.get());
1197 }
1198
1199 blink::WebServicePortProvider* BlinkPlatformImpl::createServicePortProvider(
1200     blink::WebServicePortProviderClient* client) {
1201   return new ServicePortProvider(client, main_thread_task_runner_);
1202 }
1203
1204 blink::WebPermissionClient* BlinkPlatformImpl::permissionClient() {
1205   if (!permission_client_.get())
1206     return nullptr;
1207
1208   if (IsMainThread())
1209     return permission_client_.get();
1210
1211   return PermissionDispatcherThreadProxy::GetThreadInstance(
1212       main_thread_task_runner_.get(), permission_client_.get());
1213 }
1214
1215 blink::WebSyncProvider* BlinkPlatformImpl::backgroundSyncProvider() {
1216   if (!sync_provider_.get())
1217     return nullptr;
1218
1219   if (IsMainThread())
1220     return sync_provider_.get();
1221
1222   return BackgroundSyncProviderThreadProxy::GetThreadInstance(
1223       main_thread_task_runner_.get(), sync_provider_.get());
1224 }
1225
1226 WebThemeEngine* BlinkPlatformImpl::themeEngine() {
1227   return &native_theme_engine_;
1228 }
1229
1230 WebFallbackThemeEngine* BlinkPlatformImpl::fallbackThemeEngine() {
1231   return &fallback_theme_engine_;
1232 }
1233
1234 blink::Platform::FileHandle BlinkPlatformImpl::databaseOpenFile(
1235     const blink::WebString& vfs_file_name, int desired_flags) {
1236 #if defined(OS_WIN)
1237   return INVALID_HANDLE_VALUE;
1238 #elif defined(OS_POSIX)
1239   return -1;
1240 #endif
1241 }
1242
1243 int BlinkPlatformImpl::databaseDeleteFile(
1244     const blink::WebString& vfs_file_name, bool sync_dir) {
1245   return -1;
1246 }
1247
1248 long BlinkPlatformImpl::databaseGetFileAttributes(
1249     const blink::WebString& vfs_file_name) {
1250   return 0;
1251 }
1252
1253 long long BlinkPlatformImpl::databaseGetFileSize(
1254     const blink::WebString& vfs_file_name) {
1255   return 0;
1256 }
1257
1258 long long BlinkPlatformImpl::databaseGetSpaceAvailableForOrigin(
1259     const blink::WebString& origin_identifier) {
1260   return 0;
1261 }
1262
1263 bool BlinkPlatformImpl::databaseSetFileSize(
1264     const blink::WebString& vfs_file_name, long long size) {
1265   return false;
1266 }
1267
1268 blink::WebString BlinkPlatformImpl::signedPublicKeyAndChallengeString(
1269     unsigned key_size_index,
1270     const blink::WebString& challenge,
1271     const blink::WebURL& url) {
1272   return blink::WebString("");
1273 }
1274
1275 static scoped_ptr<base::ProcessMetrics> CurrentProcessMetrics() {
1276   using base::ProcessMetrics;
1277 #if defined(OS_MACOSX)
1278   return scoped_ptr<ProcessMetrics>(
1279       // The default port provider is sufficient to get data for the current
1280       // process.
1281       ProcessMetrics::CreateProcessMetrics(base::GetCurrentProcessHandle(),
1282                                            NULL));
1283 #else
1284   return scoped_ptr<ProcessMetrics>(
1285       ProcessMetrics::CreateProcessMetrics(base::GetCurrentProcessHandle()));
1286 #endif
1287 }
1288
1289 static size_t getMemoryUsageMB(bool bypass_cache) {
1290   size_t current_mem_usage = 0;
1291   MemoryUsageCache* mem_usage_cache_singleton = MemoryUsageCache::GetInstance();
1292   if (!bypass_cache &&
1293       mem_usage_cache_singleton->IsCachedValueValid(&current_mem_usage))
1294     return current_mem_usage;
1295
1296   current_mem_usage = GetMemoryUsageKB() >> 10;
1297   mem_usage_cache_singleton->SetMemoryValue(current_mem_usage);
1298   return current_mem_usage;
1299 }
1300
1301 size_t BlinkPlatformImpl::memoryUsageMB() {
1302   return getMemoryUsageMB(false);
1303 }
1304
1305 size_t BlinkPlatformImpl::actualMemoryUsageMB() {
1306   return getMemoryUsageMB(true);
1307 }
1308
1309 size_t BlinkPlatformImpl::physicalMemoryMB() {
1310   return static_cast<size_t>(base::SysInfo::AmountOfPhysicalMemoryMB());
1311 }
1312
1313 size_t BlinkPlatformImpl::virtualMemoryLimitMB() {
1314   return static_cast<size_t>(base::SysInfo::AmountOfVirtualMemoryMB());
1315 }
1316
1317 bool BlinkPlatformImpl::isLowEndDeviceMode() {
1318   return base::SysInfo::IsLowEndDevice();
1319 }
1320
1321 size_t BlinkPlatformImpl::numberOfProcessors() {
1322   return static_cast<size_t>(base::SysInfo::NumberOfProcessors());
1323 }
1324
1325 bool BlinkPlatformImpl::processMemorySizesInBytes(
1326     size_t* private_bytes,
1327     size_t* shared_bytes) {
1328   return CurrentProcessMetrics()->GetMemoryBytes(private_bytes, shared_bytes);
1329 }
1330
1331 bool BlinkPlatformImpl::memoryAllocatorWasteInBytes(size_t* size) {
1332   return base::allocator::GetAllocatorWasteSize(size);
1333 }
1334
1335 blink::WebDiscardableMemory*
1336 BlinkPlatformImpl::allocateAndLockDiscardableMemory(size_t bytes) {
1337   return content::WebDiscardableMemoryImpl::CreateLockedMemory(bytes).release();
1338 }
1339
1340 size_t BlinkPlatformImpl::maxDecodedImageBytes() {
1341 #if defined(OS_ANDROID)
1342   if (base::SysInfo::IsLowEndDevice()) {
1343     // Limit image decoded size to 3M pixels on low end devices.
1344     // 4 is maximum number of bytes per pixel.
1345     return 3 * 1024 * 1024 * 4;
1346   }
1347   // For other devices, limit decoded image size based on the amount of physical
1348   // memory.
1349   // In some cases all physical memory is not accessible by Chromium, as it can
1350   // be reserved for direct use by certain hardware. Thus, we set the limit so
1351   // that 1.6GB of reported physical memory on a 2GB device is enough to set the
1352   // limit at 16M pixels, which is a desirable value since 4K*4K is a relatively
1353   // common texture size.
1354   return base::SysInfo::AmountOfPhysicalMemory() / 25;
1355 #else
1356   return noDecodedImageByteLimit;
1357 #endif
1358 }
1359
1360 uint32_t BlinkPlatformImpl::getUniqueIdForProcess() {
1361   // TODO(rickyz): Replace this with base::GetUniqueIdForProcess when that's
1362   // ready.
1363   return base::trace_event::TraceLog::GetInstance()->process_id();
1364 }
1365
1366 scoped_refptr<base::SingleThreadTaskRunner>
1367 BlinkPlatformImpl::MainTaskRunnerForCurrentThread() {
1368   if (main_thread_task_runner_.get() &&
1369       main_thread_task_runner_->BelongsToCurrentThread()) {
1370     return main_thread_task_runner_;
1371   } else {
1372     return base::ThreadTaskRunnerHandle::Get();
1373   }
1374 }
1375
1376 bool BlinkPlatformImpl::IsMainThread() const {
1377   return main_thread_task_runner_.get() &&
1378          main_thread_task_runner_->BelongsToCurrentThread();
1379 }
1380
1381 WebString BlinkPlatformImpl::domCodeStringFromEnum(int dom_code) {
1382   return WebString::fromUTF8(ui::KeycodeConverter::DomCodeToCodeString(
1383       static_cast<ui::DomCode>(dom_code)));
1384 }
1385
1386 int BlinkPlatformImpl::domEnumFromCodeString(const WebString& code) {
1387   return static_cast<int>(ui::KeycodeConverter::CodeStringToDomCode(
1388       code.utf8().data()));
1389 }
1390
1391 WebString BlinkPlatformImpl::domKeyStringFromEnum(int dom_key) {
1392   return WebString::fromUTF8(ui::KeycodeConverter::DomKeyToKeyString(
1393       static_cast<ui::DomKey>(dom_key)));
1394 }
1395
1396 int BlinkPlatformImpl::domKeyEnumFromString(const WebString& key_string) {
1397   return static_cast<int>(
1398       ui::KeycodeConverter::KeyStringToDomKey(key_string.utf8().data()));
1399 }
1400
1401 }  // namespace content